This book from The Institute of Boiler and Radiator Manufacturers called I=B=R Installation Guide (Number 2): One Pipe Steam Heating Systems was published in March, 1946. It provides the basis for installing one-pipe steam heating systems for buildings having a heat loss no greater than 92,640 Btu/hr.
The Improved Webster Type "R" System of Steam Heating is a service bulletin from Warren Webster and Company (The Pioneers of Vacuum Steam Heating), established in 1888.
This manual was created by O-E Specialty Manufacturing Co. and outlines how to install the "O-E" Perfect System, which is a Vapor Vacuum heating system.
Here is the original Installation and Operating Instructions and Parts List for The H.B. Smith Company's Oil Fired Cast Iron Hot Water Boilers (No. OHB-13W). This is esti...